William t



W. T. FOX.

PRESSURE REGULATOR.

A Patented June 9, 1885.

Fay,

(No Model.)

WILLIAM T.

l PATENT Erice.

EOx, OE RocHEsTER, NEW YORK, AssiGNoR TO THE STEAM GAUGE AND LANTERN COMPANY, OF SAME PLACE.

PRESSURE-REGULATOR.

SPECIFICATION forming part of Letters Patent No. 319,896, dated .Tune 9, 1885.

Appneannn nieu July so, 1884. (No mael.)

To all whom, it may concern:

Be it known that I, WILLIAM T. Fox, of the city of Rochester, in thecounty ofjMonroe and State of New York, have invented new and useful Improvements in Pressure-Regulators,

. tral discharge-opening, d, communicating with lof which the following is ay specification.

This invention relates more particularly'rto an improvement in that class of pressure-regulators which are employed in connection with 1o air-compressors and similar apparatus for regulating the pressure of the water from the mains or other supply to the aircompressor or other apparatus in which the water `is to be used.

The object of my invention is to provide a regulator which is simple in construction and reliable in its operation, and in which the pressure of the water from the mains can be reduced and maintained at a steady and uniform pressure.

My invention consists, to these ends, of the improvements in the construction of the regulator which will be hereinafter fully set forth, and particularly pointed out in the claims.

In the accompanying drawings, Figure l is a vertical longitudinal section of my improved regulator. Fig. 2 is an elevation of the same at right angles to Fig. 1. Fig. 3 is a horizontal section in line frm, Fig. l. Fig. 4 is across- 3o section in line 'y y, Fig. 1, looking upward.

Like letters of reference refer to like parts in the several figures.

A represents the inlet-pipe of the regulator, which is connected with the water-mains or 3 5 other source of supply by asuitable coupling, a, and B is the discharge-pipe,which conducts the water to the air-compressor or other apparatus in which it is to be used.

G represents a chamber with which the in- 4o let-pipe A is connected. The chamber C is closed at its top by a screw-cap, c, a disk of rubber or other suitable packing material, c', being interposed between the cap c and the chamber C. -Thelatter is closed at its bottom by a screw-plug or stuffing-box, c.

D represents a cylinder or chamber arranged below the chamber C and in line therewith. The chamber D is of larger diameter than the chamber C, and'is connected to the latter by 5o a bifurcated frame, E. The frame E is preferably cast with the chamber C, and secured by suitable bolts to a bridge-piece, d, cast with or secured to the top of the chamber D. The bottom of the chamber D is closed by a screwthreaded cap, d', which is provided with a cen- 4the pipe B.

chamber D, and provided with a tubular stem, f, which extends upwardly through an annular ring, d3, formed in the bridge-piece d, through the stuffing-box c2, and into the chamber C. rlhe upper end of the tubular stem f extends beyond the mouth of the inlet-pipe A in the chamber C, and terminates a short distance from the top of the chamber C, leaving a space between the opening f of the tubular stem and is in its lowest position in the chamber D. The piston F is composed of a disk,f2, preferably cast with the tubular stemf, a disk, f3, and a cup-shaped packing-ring, f4, of rubber the disks f 2 f 3, the parts being secured together by screw-boltsf5. The lower end of the tubular stemf extends through the piston F, and the latter is provided on its under side with the bottom of the cylinder D when the piston is in its lowest position. The flange or rim g is provided with radial passages g', through f into the chamber D below the piston.

H represents a spiral spring, which surrounds the tubular stem f and bears with its lower end against the piston F, and tends to hold the same in its lowest position. The upper end of the spring H is seated in a hollow screw-nut or thimble, h, which works in an internal screw-thread formedin the annular ring or collar d3 of the bridge-piece d. By turning the screw-nut hin the proper direction the tension of the spring H can be regulated. The water from the mains or other source of supply the inlet-pipe A. From the chamber C itthen passes down through the tubular stem j and through the o penings g' intol the chamber D below the piston F, and from the chamber D it escapes through the discharge-opening d an annular iiange or rim, g, which rests upon which the water escapes from the tubular stem.

Fis a water-tight piston arranged in theV the top of the chamber C when the piston F or other suitable material, interposed between under pressure enters the chamber C through IOO into the discharge-pipe B. When the pressure of the water in the chamber D exceeds the pressure of the spring H upon the piston, the latter is forced upward and the spring compressed. The tubular stemf, taking part in this movement, causes its upper end to rise in the chamber C and bear against the packing c', thereby diminishing or shutting off thesupply of water to the chamber D. When the pressure of the water in the chamber D hasdiminished, the reaction of the spring H forcesl the piston and tubular stem downward, thereby regulating the supply of Water to the chamber D, and maintaining a uniform pressure through the discharge-pipe B. The amount of pressure required to accomplish this result may be readily varied by regulating the tension of the spring H by means of the screw-nut h.

The apparatus is preferably provided with a bracket or support, I, whereby the regulator can be readily secured to the Wall or otherV support.

I claim as my invention- 1. The combination, in a pressure-regulator, of an inlet-chamber, C, achamber, D, havinga discharge-opening, d2, in its end, a piston, F, arranged in the chamber D above the discharge d2, and tubular stem f, secured to said piston and extending into the chamber C and through the piston,aud forming a water- I passage between the chamber C and the chamber D below said piston, substantially as set forth. g

2. In a pressure-regulator,ihe combination, with an inlet-chamber, C, and outlet-chamber D, of the piston F, arranged in the chamber D, tubular stem f, secured to said piston and forming a communication between the chamber C and the chamber D below the piston, spring H, and an adjusting device whereby the tension of the spring can be regulated, substantially as set forth.

3. In a pressure-regulator, the combination, with an inlet-chamber, O, and outlet-chamber D, of the piston F, arranged in the chamber D, tubular stem f, secured to the piston F,and forming a communication between the chamber C and the bottom of the chamber D, spring H, bearing against the piston F, and screw-nut h, substantially as set forth.

4. The combination, with the inlet-chamber C and outlet-chamber D, connected by a bifurcated frame, E, of the piston F, arranged in the chamber D, and provided with an annular ange or rim, g, having openings g', the tubular stem f, spring H, and screw-nut h, substantially as set forth.

Witness my hand this 30th day of June, 1884.

WILLIAM T. FOX.

Witnesses:

WM. E. SLoAN, 'G. R. ADAMS. 

